Personally I like it. Can't blame him since he has a goal set in mind and he wants to save. He's been born into poverty you really can't expect someone like that to not cherish money. And it's not like he's stuck up about it(づ ̄ ³ ̄)づ honestly I find it cute and funny.(〜 ̄△ ̄)〜
The only thing I can’t stand is the MC personality... he is so greedy for money that it becomes embarrassing!( ̄へ ̄)